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• C++ library for dealing with multiple HTTP connections

  - by JWood

  Hi, I'm looking for a library to deal with multiple simultaneous HTTP connections (pref. on a single thread) to use in C++ in Windows so it can be Win32 API based. So far, I have tried cURL (multi interface) which seems to be the most appropriate that I have found but my problem is that I may have a queue of 200 requests but I need to only run 4 of them at a time. This becomes problematic when one request may take 2 seconds and another may take 2 mins as you have to wait on all handles and receive the result of all requests in one block. If anyone knows a way round this it would be very useful. I have also tried rolling my own using WinHTTP but I need to throttle the requests so they would ideally need to be on a single thread and use callbacks for data which WinHTTP does not do. The best thing I've found which would solve all my problems is ASIHTTPRequest but unfortunately it's Mac OSX only. Thanks, J

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• C# .net framework- border on only one side of the form

  - by user161179

  I am an inexperienced programmer , completely new to programming for windows . I am writing a little program that I always wanted . Its being written using C# using .net framework. atleast thats what I think I am doing. All the talk about framework and .nets , windows forms , and win32 api has all got me really confused.. :( anyways I have simple Form object. Form f = new Form() ; f.Text = "" ; f.ControlBox =false ; Now How to remove the all the borders on the form except one sides? As in, the side borders should go , but the top border should stay FormBorderStyle doesn't have anything for this Also how do you people solve such problems yourself , without asking ? look at others code ? read a a book ? any particular website ? I have googled , but it didn't turn up nothing.

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• Why does eclipse break when the .project file is hidden?

  - by Tommy

  Why does eclipse break with the error "Could not write file: M:\workspaces\eclipse\project.project. M:\workspaces\eclipse\project.project (Access is denied)" when the .project file is hidden (on the Windows file system)? Note: This happens w/ other files as well. Steps to Reproduce: 1. Install the latest eclipse, I am using eclipse-jee-galileo-SR2-win32.zip. (Not sure if it happens in other versions) 2. Create a project. 3. Browse to the project in windows explorer, find the .project file. 4. Right click - properties 5. Under Attributes check hidden. 6. In eclipse, open the .project file, make a change and try to save. 7. After you get the error, uncheck the hidden box and save again.

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• Licensing your code in Mono

  - by Jerry

  I'm working with some code in Visual Studio. My parter-in-crime fellow developer has suggested that the code also be available to work under Mono. I'm impresed witht he work that is already done in Mono, but I'm very new to Mono, so I don't know what it can/cannot do. I've already written a class in C# using the .NET LicenseManager object. It writes to the windows registry, so I know I'll have to modify it so that it will use some compiler flags like #if Win32 or #if MONO. My question is two-fold: 1) Does Mono implement the same LicenseManager class structure? 2) If so, how do you guys lock down your code using LicenseManager in Linux? (i.e. Write to files, use a hardware dongle, compare to hardware serials, etc??)

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• Cross-reference between delphi records

  - by Paul-Jan

  Let's say I have a record TQuaternion and a record TVector. Quaternions have some methods with TVector parameters. On the other hand, TVector supports some operations that have TQuaternion parameters. Knowing that Delphi (Win32) does not allow for forward record declarations, how do I solve this elegantly? Using classes is not really an option here, because I really want to use operator overloading for this rare case where it actually makes good sense. For now I simply moved these particular methods out of the records and into separate functions, the good old-fashioned way. Better suggestions are most welcome.

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• Subprocess fails to catch the standard output

  - by user343934

  I am trying to generate tree with fasta file input and Alignment with MuscleCommandline import sys,os, subprocess from Bio import AlignIO from Bio.Align.Applications import MuscleCommandline cline = MuscleCommandline(input="c:\Python26\opuntia.fasta") child= subprocess.Popen(str(cline), stdout = subprocess.PIPE, stderr=subprocess.PIPE, shell=(sys.platform!="win32")) align=AlignIO.read(child.stdout,"fasta") outfile=open('c:\Python26\opuntia.phy','w') AlignIO.write([align],outfile,'phylip') outfile.close() I always encounter with these problems Traceback (most recent call last): File "<string>", line 244, in run_nodebug File "C:\Python26\muscleIO.py", line 11, in <module> align=AlignIO.read(child.stdout,"fasta") File "C:\Python26\Lib\site-packages\Bio\AlignIO\__init__.py", line 423, in read raise ValueError("No records found in handle") ValueError: No records found in handle

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• WinUSB application or User-Mode Driver as a filter driver for USB Analysis/Sniffer/Trending

  - by Robert

  A question to maybe some who have worked extensively with WinUSB APIs or use mode USB drivers - Does anyone know if the WinUSB API or a user mode driver can be used as a passive observer of USB connections, capturing notification of interrupts, control requests, data transfers...etc without interfering with other applications (such as iTunes) which would obviously require concurrent access to the device at the same time my application is monitoring the connection and displaying data on it? Or do you pretty much have to write a kernel-mode filter driver and inject yourself in the USB stack in order to make that happen? In the past, there have been a few credible options (libusb-win32 and usbsnoop to be specific) though both are built around the old DDK, not the Windows Driver Foundation, and are not really supported on a regular basis any more. I'm hesitant to build something significant around them, as a result.

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• Measuring device drivers CPU/IO utilization caused by my program

  - by Lior Kogan

  Sometimes code can utilize device drivers up to the point where the system is unresponsive. Lately I've optimized a WIN32/VC++ code which made the system almost unresponsive. The CPU usage, however, was very low. The reason was 1000's of creations and destruction of GDI objects (pens, brushes, etc.). Once I refactored the code to create all objects only once - the system became responsive again. This leads me to the question: Is there a way to measure CPU/IO usage of device drivers (GPU/disk/etc) for a given program / function / line of code?

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• Hiding members in a C struct

  - by Marlon

  I've been reading about OOP in C but I never liked how you can't have private data members like you can in C++. But then it came to my mind that you could create 2 structures. One is defined in the header file and the other is defined in the source file. // ========================================= // in somestruct.h typedef struct { int _public_member; } SomeStruct; // ========================================= // in somestruct.cpp #include "somestruct.h" typedef struct { int _public_member; int _private_member; } SomeStructSource; SomeStruct *SomeStruct_Create() { SomeStructSource *p = (SomeStructSource *)malloc(sizeof(SomeStructSource)); p->_private_member = 0xWHATEVER; return (SomeStruct *)p; } From here you can just cast one structure to the other. Is this considered bad practice? Or is it done often? (I think this is done with a lot of the structures when using the Win32 API, but you guys are the experts let me know!)

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• How to Install two library CGNS for Fortran under WIndows XP

  - by user317368

  Hello, I have to install two libraries CGNS to use it in Fortan, but I don't understand how, the basic instructions are: To compile under MS Windows: configure.bat [options] then gmake if using GNU make, or nmake if using nmake. NOTE: This assumes that the cl compiler is in your path, and that the INCLUDE and LIB environment variables are set to include the directories containing the MSC include files and libraries. If not, you will need to use full path names to cl and link, and define INCLUDE and LIB in make.win32. You may also execute VCVARS32.BAT in the BIN directory of your VC installation to set these up prior to running nmake. so what i did was to: tape configure.bat it creates the rights files I set the news paths and lib, include for the cl.exe and link.exe but now the warning and error messages are about the clui.dll. cl -nologo -I. -Iadf -FoWIN32\cgns_error.obj -c cgns_error.c Cannot load language resource clui.dll what can i do now? I'm a beginner user in this field. Thankx Manal

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• timing of reads from serial port on windows

  - by Marcin K

  I'm trying to implement a protocol over serial port on a windows(xp) machine. The problem is that message synchronization in the protocol is done via a gap in the messages, i.e., x millisecond gap between sent bytes signifies a new message. Now, I don't know if it is even possible to accurately detect this gap. I'm using win32/serport.h api to read in one of the many threads of our server. Data from the serial port gets buffered, so if there is enough (and there will be enough) latency in our software, I will get multiple messages from the port buffer in one sequence of reads. Is there a way of reading from the serial port, so that I would detect gaps in when particular bytes were received?

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• Adding an host programmatically (name resolution under Windows)

  - by Tanelorn

  I would like to programmatically add to Windows a name / IP association so that this name can be resolved locally. This does not have to be persisted between reboots. The only way I now is to add an entry to the "hosts" file, but this feels hacky especially since I would like to automate this. Is there any way to do this using a command-line tool or a Win32 API? Perhaps by addind an entry to Windows DNS cache or something similar? Oh, and please state if this solution is Vista-compatible. Regards. Edit : Thanks, guy. Sadly, all of your answers indeed involve DNS or other servers. I was looking for a purely local solution which would work on a "standard" Windows installation. Such a thing does not seem to exist, though.

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• How to Detect a Right Click on Taskbar in WPF

  - by Zay

  I've got a WPF application in C# that starts off with a loading dialog. As expected, a button for the app shows up in the Windows taskbar. I would like to detect right-clicks that might be done to that button. Ultimately, I hope to disable the right-click or simply have the loading dialog regain focus. I've seen that some people use custom libraries and packages (interop, for example) to achieve some Win32 functionality, but I'd personally like to avoid this. Furthermore, these libraries/packages appear to be specific to Windows Forms; I've not seen anything for WPF. Is it impossible to manipulate the taskbar's right-click in WPF?

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• PDF text search and split library

  - by Horace Ho

  I am look for a server side PDF library (or command line tool) which can: split a multi-page PDF file into individual PDF files, based on a search result of the PDF file content Examples: Search "Page ???" pattern in text and split the big PDF into 001.pdf, 002,pdf, ... ???.pdf A server program will scan the PDF, look for the search pattern, save the page(s) which match the patten, and save the file in the disk. It will be nice with integration with PHP / Ruby. Command line tool is also acceptable. It will be a server side (linux or win32) batch processing tool. GUI/login is not supported. i18n support will be nice but no required. Thanks~

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• Error "E_UNEXPECTED(0x8000FFFF)" when using CDec/CInt/IsNumeric

  - by Marc vB

  I have encountered a strange problem, which I could solve but don't understand why it did occur. I have build a DLL with COM enabled. In this DLL I have classes that did use the functions CInt, CDec and IsNumeric. If I test these classes from a .NET application then it works ok. But when I called/run these classes from a Win32 application (with COM) then I did get an "E_UNEXPECTED(0x8000FFFF)" error. After some debugging I found out that the problem would go away if I: - replaced IsNumeric with Integer.TryParse or Decimal.TryParse - replaced CInt with Integer.Parse - replaced CDec with Decimal.Parse Can anyone explain this? Again, I could solve it by doing this but I would like to know why.

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• How to build a C++ Dll wrapper that catches all exceptions?

  - by bart de vries

  Like the title says, we’re looking for a way to catch all exceptions from a piece of C++ code, and wrap this in a dll. This way we can shield of the application that uses this dll, from any errors occurring in this dll. However, this does not seem possible with C++ under Windows. Example: void function() { try { std::list<int>::iterator fd_it; fd_it++; } catch(...) {} } The exception that occurs is not caught by the standard C++ try/catch block, nor by any SEH translator function set by _set_se_translator(). Instead, the DLL crashes, and the program that uses the DLL is aborted. We compiled with Visual C++ 2005, with the option /SHa. Does anyone know if it’s possible in C++/Win32 to catch these kind of problems and make a rocksolid DLL wrapper?

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• How to change the assemblyIdentity of an executable

  - by David

  I want to hide the tool I used to create an .exe file. I am not doing anything illegal, I just want to protect my intellectual property from being copied. If I open the exe file in a text editor I see the following section. <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"> <assemblyIdentity version="XXX.XX" processorArchitecture="X86" name="Microsoft.Windows.NameOfTheTool" type="win32" /> </assembly> I have attempted to change the name to: name="Microsoft.Windows.SomeOtherName" This resulted in the following message when I attempted to execute the file. "This application has failed to start because its side-by-side configuration is incorrect." How can I solve this?

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• windows 64bit problem

  - by renad

  hi there, I have developed a windows application using C# VS 2008 and Sql 2005 express, i have testes the application on my machine and it works fine, my machine is win32 bit, when i tried the application on windows 64bit it keeps giving me an error message on the start of the application,although i installed the sql express on that machine but should i install .NETframwork3.5sp1 64 bit also? , the target machine is widows 7 64bit, also is there a technology or a way to make the application work in the following sequence: 1- the CD is auto run 2- the setup checks for the installed prerequists and install any necessery one without the interference of the user. one last question,should i rebuild the application on an 64 bit machine to make it work on 64 bit machine? thankx

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• how do I detect OS X in my .vimrc file, so certain configurations will only apply to OS X?

  - by Brandon

  I use my .vimrc file on my laptop (OS X) and several servers (Solaris & Linux), and could hypothetically someday use it on a Windows box. I know how to detect unix generally, and windows, but how do I detect OS X? (And for that matter, is there a way to distinguish between Linux and Solaris, etc. And is there a list somewhere of all the strings that 'has' can take? My Google-fu turned up nothing.) For instance, I'd use something like this: if has("mac") " open a file in TextMate from vi: " nmap mate :w<CR>:!mate %<CR> elseif has("unix") " do stuff under linux and " elseif has("win32") " do stuff under windows " endif But clearly "mac" is not the right string, nor are any of the others I tried.

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• Is it good to continue as MFC developer or good to know .NET as well?

  - by AKN

  Normally people say MFC is little clumsy. It makes UI developement slightly difficult to maintain since it has lot of auto generated code. It has good architecture (doc/view) but is not transparent like Win32 programming to understand how window program works in the background. So with this situation, is it good to extend the exposure on MFC programming or better to switch to .NET since for faster UI design with ease in maintenance. How globally companies are looking into MFC as a technology for UI developments. Are they comfortable in supporting their developers to continue with MFC or looking for changing their development technology.

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• Lablgtk2 Installation on Windows.

  - by Animesh

  Hi there people, I am currently relearning Ocaml and am in the need of a good editor. There is a new editor from OcamlForge: OCamlEditor http://ocamleditor.forge.ocamlcore.org/. Prerequisite for installation is Lablgtk2. Installing Lablgtk2 on windows is not straight forward and there is good instruction here: http://wwwfun.kurims.kyoto-u.ac.jp/soft/lsl/install-win32.txt I have completed the first two steps and in the third step, as warned, it is failing on the native code version. This is where I am left stranded. How do I check to see if the assembler is on my path? What am I missing here? Please help me move forward from this point. Sincere thanks. Animesh

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• How to easily pass a very long string to a worker process under Windows?

  - by sharptooth

  My native C++ Win32 program spawns a worker process and needs to pass a huge configuration string to it. Currently it just passes the string as a command line to CreateProcess(). The problem is the string is getting longer and now it doesn't fit into the 32K characters limitation imposed by Windows. Of course I could do something like complicating the worker process start - I use the RPC server in it anyway and I could introduce an RPC request for passing the configuration string, but this will require a lot of changes and make the solution not so reliable. Saving the data into a file for passing is also not very elegant - the file could be left on the filesystem and become garbage. What other simple ways are there for passing long strings to a worker process started by my program on Windows?

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• Could Grand Central Dispatch (`libdispatch`) ever be available on Windows?

  - by elliottcable

  I’m looking into multithreading, and GCD seems like a much better option than manually writing a solution using pthread.h and pthreads-win32. However, although it looks like libdispatch is either working on, or soon going to be working on, most newer POSIX-compatible systems… I have to ask, what about Windows? What are the chances of libdispatch being ported to Windows? What are the barriers preventing that from happening? If it came down to it, what would I need to do to preform that portage?

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• Calling a C function in a DLL with enum parameters from Delphi

  - by dommer

  I have a third-party (Win32) DLL, written in C, that exposes the following interface: DLL_EXPORT typedef enum { DEVICE_PCI = 1, DEVICE_USB = 2 } DeviceType; DLL_EXPORT int DeviceStatus(DeviceType kind); I wish to call it from Delphi. How do I get access to the DeviceType constants in my Delphi code? Or, if I should just use the values 1 and 2 directly, what Delphi type should I use for the "DeviceType kind" parameters? Integer? Word?

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• Will VC++ MFC become obsolete in near future?

  - by AKN

  Normally people say MFC is little clumsy. It makes UI development slightly difficult to maintain since it has lot of auto generated code. It has good architecture (doc/view) but is not transparent like Win32 programming to understand how window program works in the background. So with this situation, is it good to extend the exposure on MFC programming or better to switch to .NET since for faster UI design with ease in maintenance. Is it good to continue as MFC developer or good to know .NET as well? How globally companies are looking into MFC as a technology for UI developments. Are they comfortable in supporting their developers to continue with MFC or looking for changing their development technology.

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